Marvel has unveiled two more posters for "The Avengers," this time featuring concept art of Chris Hemsworth as Thor, and Samuel L. Jackson, Clark Gregg and Cobie Smulders as Nick Fury, Agent Coulson, and Maria Hill.

"Thor," from Marvel Studios and Paramount Pictures, opened to a healthy first weekend gross of $66 million. Its success signals the superhero film factory can launch successful franchises from lesser known characters.

Writer Rob Williams and editor Tom Brennan team up to explain the ins and outs of the upcoming Iron Man epic "The Iron Age" in Marvel's latest "Next Big Thing" call, revealing the full creative teams and more.